smash::anonymous_namespace{bremsstrahlungactiondilepton.cc} Namespace Reference

Functions
double	R_2_helper (const double s)
	Helper function for calculating R_2 as defined in Weil:2013mya [72], eq. More...

Function Documentation

R_2_helper()

double smash::anonymous_namespace{bremsstrahlungactiondilepton.cc}::R_2_helper

(

const double

s

)

Helper function for calculating R_2 as defined in Weil:2013mya [72], eq.

(42).

Parameters

[in]

s

Mandelstam variable s [GeV²]

Returns

R_2(m_{inv}^2) (dimensionless)

Definition at line 35 of file bremsstrahlungactiondilepton.cc.

                                  {
  const double m_pn = 2 * nucleon_mass;
  return (s < (m_pn * m_pn)) ? 0.0 : std::sqrt(1.0 - (m_pn * m_pn) / s);
}

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